schneider



(No Model.) 3 SheetsSheet 1. J. SCHNEIDER.

ELECTRIC DOOR OPENER.

No. 381,725. Patented Apr. 24, 1888.

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(No Model.) 3 Sheets-Sheet 2.

J. SCHNEIDER.

ELBGTRIGWDOOR OPENER.

No. 381,725. Patented Apr. 24, 1888.

Fig. E.-

(No Model.) y a sheets-sheen 3. J. SCHNEIDER.

ELECTRIC DOOR OPENER.

NO. 381,725. Patented Apr. Z4, 1888.

Unirse .STATES Parenti* @lirica JOHN SCHNEIDER, OF NEVI YORK,- N. Y.

ELECTRlC DOOR=OPENER.

SPECIFICA-:NGN forming part of Letters Patent NO. 391,725, dated. April24, 1888.

Application tiled June 10, 1387. Serial No. 240.8%.

To aZZ whom t may concern.-

Beit known that l, .Tous SCHNEIDER, a citizen of United States, andaresident of New York, county and State of New York, have in ventedcertain new and useful Improvements in Electric Door-Openers, of whichthe following is a specification.

The invention relatestotlie mechanical construction of an electric doorlock and opener.

The object ofthe invention is to provide simplicity ot construction, andespecially simplicity ot' operation, as well as compactness, which is anelement highly desirable in all forms of door-locks.

Figure l is a general front view of the device with the cover removed;Fig. 2 is a sectional `view of Fig. l at the line X. Fig. 3 is atwo-sided view of the catch or latch. Figs. 3 and 3" are inodilied formsof the latch. Figs. el and 5 are different views of the bent lever andretractiie spring. Figs. 6 and 7 represent modifications of Figs. 4 and5. Figs. 8 and 9 are different views of the armature. Fig. 10 is a viewof the latch audits rectractile spring,

being a rear view ofthe latch as shown in Fig. 1. Figs. 11 and 12 arediti'erent views of the spring i'or throwing open the door when theelectric lock releases the door. Fig. 13 shows the spring E in operativeconnection with the electric lock. It shows the loe-k screwed to thedoor, which is represented in elevation and partly broken away. Thearrow indicates the direction in which the door opens when the magnetattracts its armature, the spring forcing it in the said direction. Partof the casing of the lock is also broken away to show the magnet. Fig.la shows on an enlarged scale the surface g pressing obliquely upon theedge of the lock-latch tu, which is only partly represented. The arrowupon the arm Z indicates the direction of movement of the said arm. Fig.15 is a view showing the latch sc in operative connection with the lock.The latch :rin this figurelis mounted upon the door b and the latch touponthe jamb.

The device consists of the combination of a casing, a, which fits in thedoor, shown partially by b,- anelectro-niagnet, c, supported in thecasing and having its arms parallel to the back of the easing; anarmature, d, of soft (No model.)

iron, riveted or similarly xed to a brass bearing, e, which is rotatableupon the iixed screwj', the said armature having at the end opposite thebearing a thinner portion, g, and projection or stop h, and a retractiiespring, i; a bent lever having a curved arm, 7c, and a straight arm, Z,the curved arm having a notch, m, which normally contains the free endof said armature; a retractile spring, n, secured to said bent arm,curved over the bear ing o of the bent lever, and pressing against aprojection, p, of said casing; an enlarged free end to said straight armZ, having upon its end a surface, g, which is curved in reference to thecenter of the bearing of the lever as its central point, the saidsurface being cylindrical in its nature and normally pressing againstthe rear surface of the latch; a latch having hearings r; a journal, s;a coiled retractile spring, t, surrounding said journal, one end ofsaidspring passing througha notch, u, in the latch and pressing upon theoasinga, the other end ofthe spring pressing upon the latch itself; aprojection or stop, o, which strikes against the casing a to limit itsniotions, a curved surface, w, against which the second latch, whichbelongs to the doorjamb F, strikes when the door is being shut; agroove, c, in the lirst latch, into which the latch fr enters when thedoor is shut, and a recess, A, in the easing, in which the iirst latchoperates, the axes of the armature-journal and of the bent-lever journalbeing parallel to each other, and the Orthographie projection of theaxis of the journal of the first-named latch upon the other named axesbeing perpendicular to said axes. The irst-namcd latch may, forconvenience, be termed the lock-latch. The latch fr may he fixed to thedoor-jamb For movable therein. The circuit B, which passes through theelectro-magnet, includes any suitable electric generator andpush-button, which are not shown in the drawings.

In Figs. 6 and 7 the curved surface q is re placed by a rotary curvedsurface belonging to the little roller C, supported upon a bearing,D,which is fixed to the straight arm Z of the bent lever.

The operation of the device is as follows: Vhen an electric current ofsuiiicient power IOO passes through the electro-magnet, its armature isattracted, thereby releasing the bent lever, which, however, does notmove except by the force of the spring E,Which is ixed to the door-jambF and presses upon the door b. The spring t presses upon the lock-latchand rotates the same through an angle of about ninety degrees. Therotation of the lock-latch causes the surface g to slide more and morerapidly to the right. Just as soon as the latch escapes from thelock-latch the latter turns back to its normal position on account ofits retractile springt, the bent lever returns to its normal position onaccount of its retractile spring n, and, the circuit being broken, thearmature returns to its normal position on account of its retractilespring i. If the door is pulled upon with an effort to open the samebefore the circuit is compl-eted,it `will be found that the deviceserves as a very efficient lock, because the straight arm Z pressesapproximately perpendicularly upon the rear surface ot' the lock-latch,and because the free end of the bent arm k presses at right angles uponthe armature.

The object of having the arm 7c curved is for the sake of strength.

While in Fig. 2 the retractile spring t of the latch is plainly seen tobe .located upon the shaft of the latch, yet the location of this Springmay be changed, if desired. In Figs. 3" and 3b this retractile spring islocated upon a rod, H,which is carried by the latch, but is independentof the shaft I of the latch.

On account of the peculiar construction of the device hereinbeforedescribed, the closing of the electric circuit will cause the latch torelease the door even it a person or other object is pressing againstthe door.

When the armature is attracted, the latch being attached to the door inFig. 15, rotates the lock latch w and causes the surface g to slide fromthe said latch and move the door in the direction ofthe arrow shown inFig.15. Consequently the latch and door b act in a similar manner whenthe latch .fc is attached to the jainb and the lock-latch w to the door,as in Fig. 13.

I claim as my invention 1. In an electric door opener and lock, thecombination of a lock-latch, a magnet-armature, and a bent lever, onearm pressing upon the lock-latch in a direction to partially resist themovement of the lock-latch and the other arm 'pressing upon the armaturein a direction to form au approximate right angle with said armature.

2. In an electric door opener and lock, the

combination of a lock-latch, a magnet-arma ture, and a bent lever, onearm pressing upon the lock-latch in a direction to partially resist themovement of the lock-latch and the other arm pressing upon the armaturein a direction to form an approximate right angle with said armature. 3.In an electric door opener and lock, the combination of anelectro-magnet, a pivoted armature therefor having a retractile springtending to hold the armature from the magnet, a shoulder or projectionupon the armature on that side opposite to the magnet, a pivoted bentlever having one arm rectilinear and the other arm curved, a notch uponthe end of the curved arm, a retractile spring tending to press thenotch m of the curved arin upon the end of the armature in a directionto form an approximate right angle between said armature and the curvedarm, and an enlarged portion upon the rectilinear arm,having a curvedsurface pressing upon the lock-latch and tending to hold the same innormal position, the said lock-latch being pivoted in a direction atright angles to that of the bent lever and being provided with aretractile spring which tends to rotate the latch.

In testimony thatI claim the foregoing as my invention I have signed myname, in presence of two witnesses, this 9th day of May, 1887.

. JOHN SOHN EIDER.

Witnesses:

EDWARD P. THOMPSON, HAROLD G, HENDERSON.

